there is no way he could run 21 psi on stock turbo with out fule upgrades it would **** alot of stuff up

 

[quote]ORIGINAL: EMonz57


well the boost isnt what kills the motor it is the lack of fuel to cool the boost. a 2G on stock fuel cant take higher than 16-17PSI if it is then it is going to be running lean and have a lack of fuel to compensate for it causeing fuel and knock. If there are fuel upgrade on the car running 21 PSI is not a problem for the motor just the stock turbo wont do any good after that... So a big 16G turbo and some fuel upgrades 21 PSI can be run without harm


wow so your saying get some 550 injectors and a walbro 255 pump with a big 16g i can do 21psi on stock internals?i didnt know that.i have a 98 spyder gst with intake,fmic and turbo back.if i did a big 16 and fuel,how much power is usual for 21 psi?im just curious because i want to upgrade my turbo soon and want to maximize power without getting into engine internals for now.please let me know

 

There is another way He could run high boost with no boost controller. Look if theres a T tap by the waste gate... A little trick to overboost without buy a boost controller.

 

even if u had a boost controller and set it at 50psi, youd still be at 12psi by redline on a t25

 

but can you even take a boost controller off and keep the boost its set at? once you set the boost from the controller, and then take it off, wouldnt it go back to stock or w/e it was before? cuz i saw no boost controller at all and he claims he never used one. My brother is thinking that possibly the retard hooked his aftermarket boost gauge up to the wrong with or some other vaccum in the motor and its reading the PSI in that and not on the turbo.

 

If you remove the MBC it should return to stock boost. Like I said before he could have done somethng to the waistegate maybe as well. I would by a MBC and a new guage and start there because no way 21 PSI is a good thing